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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...时间服务器
#include <ctime>
#include <iostream>
#include <string>
#include <asio.hpp>
using asio::ip::tcp;
我们先定义一个函数返回当前的时间的string形式.这个函数会在我们所有的时间服务器示例上被使用.
std::string make_daytime_string()...
Is there a splice method for strings?
...he Javascript splice only works with arrays. Is there similar method for strings? Or should I create my own custom function?
...
How do I read an entire file into a std::string in C++?
How do I read a file into a std::string , i.e., read the whole file at once?
15 Answers
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SQL ON DELETE CASCADE, Which Way Does the Deletion Occur?
...ould restructure your schema into this,
CREATE TABLE Categories
(
Code CHAR(4) NOT NULL PRIMARY KEY,
CategoryName VARCHAR(63) NOT NULL UNIQUE
);
CREATE TABLE Courses
(
CourseID INT NOT NULL PRIMARY KEY,
BookID INT NOT NULL,
CatCode CHAR(4) NOT NULL,
CourseNum CHAR(3) NOT NULL,
Cour...
Convert a char to upper case using regular expressions (EditPad Pro)
...ssion in hope that I will be able to replace every match (that is just one char) to upper case char. I am using EditPad Pro (however I am willing to use any other tool that would allow me to do this, as long as it is free to try, since I only need to do this once).
...
How to get the input from the Tkinter Text Widget?
...the very first character). END is an imported constant which is set to the string "end". The END part means to read until the end of the text box is reached. The only issue with this is that it actually adds a newline to our input. So, in order to fix it we should change END to end-1c(Thanks Bryan O...
Test whether string is a valid integer
...aining it so I can learn a little? I gather it reads, "At the start of the string (^), a minus sign (-) is optional (?), followed by any number of characters between zero and 9, inclusive" ... and what then might the +$ mean? Thanks.
– Richard T
Feb 5 '10 at 21...
怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...LBACK TimerFunc(HWND hwnd,UINT uMsg,UINT_PTR idEvent,DWORD dwTime)
{
char * buf = (char*)idEvent;
printf( "%s/n", buf );//这里打印的就是"abcde"
}
DWORD CALLBACK AutoBakup( PVOID lpParam )
{
char * buf = "abcde";
MSG msg;
UINT id=SetTimer(NULL,1,1000,TimerFunc);
...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
...b = (byte)(127 + 1);
and then it compiles.
(*) at least not of the kind String-to-integer, float-to-Time, ... Java does support coercions if they are, in a sense, non-loss (Java calls this "widening").
And no, the word "coercion" did not need correcting. It was chosen very deliberately and cor...
How can I make my custom objects Parcelable?
...plementation.
public class Student implements Parcelable{
private String id;
private String name;
private String grade;
// Constructor
public Student(String id, String name, String grade){
this.id = id;
this.name = name;
t...